🇹🇭 eSIM plans for Thailand

Starting at $4.21/day*

No data caps
7-days valid
Fast, reliable connection
Skip the roaming bill
QR code emailed instantly

Get your unlimited data

How many days

More days, lower daily rate

How many eSIMs

More eSIMs, bigger discount

Total

—

Get Thailand eSIM

Install it now or once you're away. Nothing starts counting until you reach your destination and switch the eSIM on.

* The "as low as" figure is the lowest per-day rate, taken from the longest unlimited data plan on sale here.

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Why buy from us?

Here's how Onetel stacks up against other options in Thailand.

Onetel

Local SIM card

Roaming

Uncapped data plans

Activates instantly

Your number stays the same

No surprise charges

No lock-in

24/7 support

Light Restrictions

Getting Online in Thailand

Thailand blocks adult content, gambling sites, and content deemed critical of the monarchy. Social media and messaging apps are freely accessible.

Adult Sites Political Websites Gambling

Services affected: Adult content, gambling sites, content critical of the monarchy

VPN use in Thailand What does a VPN do?

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eSIM costs for Thailand

Prices shown in USD

7 days of unlimited data in Thailand costs $31.78 — about $4.54 a day on AIS, TrueMove H or dtac, with no roaming charge and no SIM to swap. In Thailand, 5G is live and median mobile download speed is 41.3 Mbps.

Duration	Data	Price	Daily cost
1 day	500 MB	$6.06	$6.06/day
3 days	—	$14.78	$4.93/day
5 days	—	$23.78	$4.76/day
7 days	100 MB	$31.78	$4.54/day
10 days	50 GB	$43.42	$4.34/day
15 days	2 GB	$63.56	$4.24/day
30 days	3 GB	$126.34	$4.21/day
180 days	50 GB	$64.00	$0.36/day

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Which networks you connect to in Thailand

Your eSIM roams onto Thailand's own operators. These are the networks and the frequencies they run — check your phone supports them before you travel.

Operator	4G / LTE bands	5G bands	5G
AIS	B1, B3, B8, B40	n28, n41, n258	Yes
TrueMove H	B1, B3, B8, B40	n28, n41, n258	Yes
dtac	B1, B3, B8, B40	n28, n41	Yes

41.3 Mbps

Median download

12.5 Mbps

Median upload

Source: Ookla Speedtest Global Index, Q2 2025

Coverage in Thailand

n258 (26 GHz mmWave) deployment is limited to dense urban areas and select venues; B40 (2300 MHz) is widely used for LTE but absent from many international phone models.

Common Questions

The details worth knowing about your Thailand eSIM

The eSIM connects to AIS, TrueMove H, and dtac. All three cover 4G on bands B1, B3, B8, B40 and 5G on n28 and n41. This means you get broad nationwide access, though mmWave 5G on n258 is limited to dense urban areas and select venues.

Band B40 (2300 MHz) is widely used for LTE in Thailand but absent from many international phone models. If your phone lacks B40, you may experience weaker coverage indoors or in rural areas. Check your device specs before travel.

No. The eSIM only provides coverage within Thailand's borders. Once you cross into Laos, Myanmar, Cambodia, or Malaysia, the connection stops. You would need a separate eSIM or roaming plan for those countries.

Data is not throttled or filtered beyond standard network management. You get full-speed access up to the plan limit. However, Thailand does block certain content by law, such as gambling sites, which may be inaccessible.

Coverage on major islands and in Chiang Mai city is strong thanks to AIS, TrueMove H, and dtac. However, remote mountain trails or small uninhabited islands may have weak or no signal, as networks concentrate on populated areas.